knife-edge pivot

例句：

1. 1.The knife-edge pivot of the blade allows for precise cuts.
   刀片的刀锋支点允许进行精确切割。
2. 2.The new design features a knife-edge pivot that enhances stability and maneuverability.
   新设计采用了刀锋支点，增强了稳定性和机动性。
3. 3.In the manufacturing process, the knife-edge pivot is crucial for maintaining precision and accuracy.
   在制造过程中，刀锋支点对于保持精度和准确性至关重要。